JIA Ribo, LI Xin, HOU Chuncai, et al. Research and fabrication of aerosol concentration detector based on laser scattering principle[J]. 2021, (9): 85-86+89.
JIA Ribo, LI Xin, HOU Chuncai, et al. Research and fabrication of aerosol concentration detector based on laser scattering principle[J]. 2021, (9): 85-86+89. DOI: 10.13873/J.1000-9787(2021)09-0085-02.
on-line monitoring of environmental aerosol concentration
a real-time detection method of aerosol concentration is proposed based on the principle of laser scattering
and an aerosol concentration detection system is designed by using STM32 micro control unit(MCU).By detecting the light pulse distribution of aerosol particles scattering on the sensitive surface of photodetector at a constant flow rate in certain period of time
the aerosol concentration in this period is retrieved
and the concentration results are displayed on the display screen through the serial port.Experimental result shows that the system has the characteristics of high precision
good repeatability and low cost
which provides an effective solution for aerosol concentration detection in the atmospheric environment.